Show how to make an item from <wicket:head> a priority one

martin-g · Mar 20, 2013 · d5a248a · d5a248a
1 parent c81bd63
commit d5a248a
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Showing 3 changed files with 28 additions and 5 deletions.
diff --git a/...6-resource-management/src/main/java/com/wicketinaction/ResourceManagementApplication.java b/...6-resource-management/src/main/java/com/wicketinaction/ResourceManagementApplication.java
@@ -1,13 +1,12 @@
 package com.wicketinaction;
 
-import java.util.ArrayList;
-import java.util.List;
-
 import com.wicketinaction.resourcemanagement.DojoResourceReference;
 import com.wicketinaction.resourcemanagement.bundles.BundlesPage;
 import org.apache.wicket.RuntimeConfigurationType;
 import org.apache.wicket.markup.head.HeaderItem;
 import org.apache.wicket.markup.head.IHeaderResponse;
+import org.apache.wicket.markup.head.PriorityHeaderItem;
+import org.apache.wicket.markup.head.StringHeaderItem;
 import org.apache.wicket.markup.head.filter.AbstractHeaderResponseFilter;
 import org.apache.wicket.markup.head.filter.FilteredHeaderItem;
 import org.apache.wicket.markup.head.filter.FilteringHeaderResponse;
@@ -17,6 +16,9 @@
 import org.apache.wicket.request.Url;
 import org.apache.wicket.request.resource.UrlResourceReference;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * A demo application for "Wicket 6 Resource management" blog article
  */
@@ -97,7 +99,24 @@ public boolean accepts(HeaderItem item)
 				// a filter that accepts everything that is not accepted by 'bucketAcceptingFilter'
 				filters.add(new OppositeHeaderResponseFilter(headBucket, bucketAcceptingFilter));
 
-				return new FilteringHeaderResponse(response, headBucket, filters);
+				return new FilteringHeaderResponse(response, headBucket, filters) {
+					@Override
+					public void render(HeaderItem item) {
+						if (item instanceof StringHeaderItem) {
+							StringHeaderItem stringHeaderItem = (StringHeaderItem) item;
+
+							// make specific header item coming from <wicket:head> a priority one
+							if (stringHeaderItem.getString().toString().contains("X-UA-Compatible")) {
+								super.render(new PriorityHeaderItem(stringHeaderItem));
+							} else {
+								super.render(item);
+							}
+						}
+						else {
+							super.render(item);
+						}
+					}
+				};
 			}
 		});
 	}

diff --git a/...gement/src/main/resources/com/wicketinaction/resourcemanagement/positioning/BasePage.html b/...gement/src/main/resources/com/wicketinaction/resourcemanagement/positioning/BasePage.html
@@ -18,7 +18,8 @@
 <!DOCTYPE html>
 <html xmlns:wicket="http://wicket.apache.org">
 <head>
-	<title></title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+    <title>Base page title</title>
 </head>
 <body>
 	<h1>Demonstrates positioning of HeaderItems</h1>

diff --git a/...ement/src/main/resources/com/wicketinaction/resourcemanagement/positioning/BasePanel.html b/...ement/src/main/resources/com/wicketinaction/resourcemanagement/positioning/BasePanel.html
@@ -17,5 +17,8 @@
 -->
 <!DOCTYPE html>
 <html xmlns:wicket="http://wicket.apache.org">
+    <wicket:head>
+        <meta http-equiv="X-UA-Compatible" content="IE=9; IE=8; IE=7; IE=EDGE" />
+    </wicket:head>
 	<wicket:panel>Panel</wicket:panel>
 </html>